Phys 5 respiratory control Flashcards Preview

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Flashcards in Phys 5 respiratory control Deck (29)
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1
Q

this is a recording from where?

brain controls the what?

A
2
Q

what is the controller for respiratory control?

A
3
Q
A
4
Q

In Vt and f which one do we figure out first?

A
5
Q

what does the Pre-botzinger complex do?

A
6
Q

What also contributes to breathing timing?

A

transition from inspiration to expiration is important in frequency

Apneusis: failure to turn off inspiration stuck in inspiration (like holding your breath)

7
Q

What contibutes to depth?

A
8
Q

DRG

A
9
Q

VRG

A
10
Q

summary of what determines timing and depth

and they go to act on?

A
11
Q

Location

and

Function

A
12
Q
A
13
Q

what are the controlled variables?

what is the sensor?

A
14
Q

chemoreceptor is what?

sensitive to what?

changes in concentrations will change firing rate how?

A
15
Q
A
16
Q

Chemoreceptors do what in hypoxia or hypercapnia?

what are the sets of chemoreceptors?

A
17
Q

Central chemoreceptors?

sensitive to what?

located where?

A
18
Q

peripheral chemoreceptors?

located where?

sensitive to?

A
19
Q

Peripheral chemoreceptors will cause what?

A
20
Q

what is the sensor if the controlled variable is lung volume?

A
21
Q

pulmonary-stretch receptors are important for controlling respiration in?

A
22
Q

What two sets are involved in protecting the gas exchange surfaces?

A

Rapidly adapting pulmonary stretch receptors

The J (juxtacapillary) receptors

23
Q

Rapidly adapting pulmonary stretch receptors

located?

sensitive to?

fibers travel where? in?

effect?

A
24
Q

the J receptors

located where?

sensitive to?

fibers travel where? in?

effect?

A
25
Q

Rapid (RAR) and J receptors are important why?

A
26
Q

cortical influence on breathing?

A
27
Q

What helps the central chemoreceptors detect the CO2 that has crossed the BBB

A

In the CSF carbonic anhydrase helps change CO2 and H2O into H2CO3

28
Q

If CO2 is low and O2 is low what happens?

A

Peripheral chemoreceptors will win it out since more sensitive to low O2 than low CO2.

Central chemoreceptors will accept the lower CO2 this is done by altering the CSF.

CSF pH will be adjusted to normal by addition of more H+ or less HCO3- by choroid plexus

HCO3- is moved to the blood (to prevent process from stopping)

29
Q

high CO2 and low O2

A

leads to respiratory acidosis as well as acidifying the CSF.

choroid plexus will add more HCO3- in CSF H+ moved back to the blood

this keeps pH normal so neurons function and keeps a higher than normal PaCO2 as normal